<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title>demo_1</title>
</head>
<body>
    <div id="app">
        {{massage}}
    </div>
</body>
<script src="js/vue.js"></script>
<script>
    var vm = new Vue({
        el:"#app",
        data:{
            massage:"Hello,World!"
        }
    })
</script>
</html>